Valle Guffari, Buscemi, Syracuse Province, Sicily, Italy i
Regional Level Types
Valle Guffari Valley
Buscemi Municipality
Syracuse Province Province
Sicily Autonomous Region
Italy Country

Diatremic tuff-breccia deposits in Valle Giuffari, a bow-shaped valley cut in the southeastern slope of Monte Lauro (central part of the Hyblean Plateau), which represent the most important xenolith occurrence in the Hyblean Plateau. Deep-seated xenoliths entrained in the diatremic tuff-breccia consist of mantle peridotites (spinel-facies harzburgite and rare lherzolite), pyroxenites, gabbroic rocks including sheared oxide-gabbros, and sedimentary lithologies.

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Standard Detailed Strunz Dana Chemical Elements

Mineral List

16 valid minerals.

Rock Types Recorded

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Alphabetical List Tree Diagram

ⓘ Harzburgite

Detailed Mineral List:

ⓘ Aragonite

Formula: CaCO₃

Reference: Manuella, F.C. (2011) Vein mineral assemblage in partially serpentinized peridotite xenoliths from Hyblean Plateau (south-eastern Sicily, Italy). Periodico di Mineralogia, 80, 2, 247-266; Correale, A., Scribano, V., and Paonita, A. (2019) A volcanological paradox in a thin-section: large explosive eruptions of high-Mg magmas explained through a vein of silicate glass in a serpentinized peridotite xenolith (Hyblean area, Sicily). Geosciences, 9(4), 150.

ⓘ 'Chlorite Group'

Reference: Correale, A., Scribano, V., and Paonita, A. (2019) A volcanological paradox in a thin-section: large explosive eruptions of high-Mg magmas explained through a vein of silicate glass in a serpentinized peridotite xenolith (Hyblean area, Sicily). Geosciences, 9(4), 150

ⓘ Chrysotile

Formula: Mg₃(Si₂O₅)(OH)₄

ⓘ Diopside

Formula: CaMgSi₂O₆

ⓘ Diopside var: Chromian Diopside

Formula: Ca(Mg,Cr)Si₂O₆

Formula: MgSiO₃

Formula: Mg₂SiO₄

Formula: (Ni,Fe)₉S₈

ⓘ Heazlewoodite

Formula: Ni₃S₂

ⓘ Hydroxylapatite

Formula: Ca₅(PO₄)₃(OH)

ⓘ Lizardite

Formula: Mg₃(Si₂O₅)(OH)₄

ⓘ Millerite

Formula: NiS

ⓘ 'Orthopyroxene Subgroup'

ⓘ Polydymite

Formula: Ni²⁺Ni³⁺₂S₄

ⓘ Quartz

Formula: SiO₂

ⓘ Quartz var: Chalcedony

Formula: SiO₂

ⓘ Saponite

Formula: Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn

ⓘ 'Spinel Group'

Formula: AE₂O₄

ⓘ Sylvite

Formula: KCl

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

ⓘ Violarite

Formula: Fe²⁺Ni³⁺₂S₄

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Godlevskite	2.BB.15	(Ni,Fe)₉S₈
ⓘ	Heazlewoodite	2.BB.05	Ni₃S₂
ⓘ	Millerite	2.CC.20	NiS
ⓘ	Polydymite	2.DA.05	Ni²⁺Ni³⁺₂S₄
ⓘ	Violarite	2.DA.05	Fe²⁺Ni³⁺₂S₄
Group 3 - Halides
ⓘ	Sylvite	3.AA.20	KCl
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	var: Chalcedony	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Aragonite	5.AB.15	CaCO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Hydroxylapatite	8.BN.05	Ca₅(PO₄)₃(OH)
Group 9 - Silicates
ⓘ	Chrysotile	9.ED.15	Mg₃(Si₂O₅)(OH)₄
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	var: Chromian Diopside	9.DA.15	Ca(Mg,Cr)Si₂O₆
ⓘ	Enstatite	9.DA.05	MgSiO₃
ⓘ	Forsterite	9.AC.05	Mg₂SiO₄
ⓘ	Lizardite	9.ED.15	Mg₃(Si₂O₅)(OH)₄
ⓘ	Saponite	9.EC.45	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂
Unclassified Minerals, Rocks, etc.
ⓘ	'Chlorite Group'	-
ⓘ	'Glass'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
ⓘ	'Spinel Group'	-	AE₂O₄

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
A_mB_nX_p, with (m+n):p = 3:2
ⓘ	Heazlewoodite	2.5.3.1	Ni₃S₂
A_mB_nX_p, with (m+n):p = 9:8
ⓘ	Godlevskite	2.7.4.1	(Ni,Fe)₉S₈
A_mX_p, with m:p = 1:1
ⓘ	Millerite	2.8.16.1	NiS
A_mB_nX_p, with (m+n):p = 3:4
ⓘ	Polydymite	2.10.1.7	Ni²⁺Ni³⁺₂S₄
ⓘ	Violarite	2.10.1.8	Fe²⁺Ni³⁺₂S₄
Group 9 - NORMAL HALIDES
AX
ⓘ	Sylvite	9.1.1.2	KCl
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A₅(XO₄)₃Z_q
ⓘ	Hydroxylapatite	41.8.1.3	Ca₅(PO₄)₃(OH)
Group 51 - NESOSILICATES Insular SiO₄ Groups Only
Insular SiO₄ Groups Only with all cations in octahedral [6] coordination
ⓘ	Forsterite	51.3.1.2	Mg₂SiO₄
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
ⓘ	Diopside	65.1.3a.1	CaMgSi₂O₆
ⓘ	Enstatite	65.1.2.1	MgSiO₃
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
ⓘ	Chrysotile	71.1.5.1	Mg₃(Si₂O₅)(OH)₄
ⓘ	Lizardite	71.1.2b.2	Mg₃(Si₂O₅)(OH)₄
Sheets of 6-membered rings with 2:1 layers
ⓘ	Talc	71.2.1.3	Mg₃Si₄O₁₀(OH)₂
Sheets of 6-membered rings with 2:1 clays
ⓘ	Saponite	71.3.1b.2	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
ⓘ	Quartz	75.1.3.1	SiO₂
Unclassified Minerals, Mixtures, etc.
ⓘ	Aragonite	-	CaCO₃
ⓘ	'Chlorite Group'	-
ⓘ	Diopside var: Chromian Diopside	-	Ca(Mg,Cr)Si₂O₆
ⓘ	'Glass'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	Quartz var: Chalcedony	-	SiO₂
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
ⓘ	'Spinel Group'	-	AE₂O₄

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
H	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
H	ⓘ Hydroxylapatite	Ca₅(PO₄)₃(OH)
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
C	Carbon
C	ⓘ Aragonite	CaCO₃
O	Oxygen
O	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
O	ⓘ Aragonite	CaCO₃
O	ⓘ Quartz (var: Chalcedony)	SiO₂
O	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
O	ⓘ Hydroxylapatite	Ca₅(PO₄)₃(OH)
O	ⓘ Spinel Group	AE₂O₄
O	ⓘ Diopside (var: Chromian Diopside)	Ca(Mg,Cr)Si₂O₆
O	ⓘ Quartz	SiO₂
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Forsterite	Mg₂SiO₄
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	ⓘ Enstatite	MgSiO₃
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Na	Sodium
Na	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Mg	Magnesium
Mg	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Mg	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Mg	ⓘ Diopside (var: Chromian Diopside)	Ca(Mg,Cr)Si₂O₆
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Forsterite	Mg₂SiO₄
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Mg	ⓘ Enstatite	MgSiO₃
Mg	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Al	Aluminium
Al	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Si	Silicon
Si	ⓘ Chrysotile	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Lizardite	Mg₃(Si₂O₅)(OH)₄
Si	ⓘ Quartz (var: Chalcedony)	SiO₂
Si	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	ⓘ Diopside (var: Chromian Diopside)	Ca(Mg,Cr)Si₂O₆
Si	ⓘ Quartz	SiO₂
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Forsterite	Mg₂SiO₄
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	ⓘ Enstatite	MgSiO₃
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
P	Phosphorus
P	ⓘ Hydroxylapatite	Ca₅(PO₄)₃(OH)
S	Sulfur
S	ⓘ Heazlewoodite	Ni₃S₂
S	ⓘ Millerite	NiS
S	ⓘ Polydymite	Ni²⁺Ni₂³⁺S₄
S	ⓘ Violarite	Fe²⁺Ni₂³⁺S₄
S	ⓘ Godlevskite	(Ni,Fe)₉S₈
Cl	Chlorine
Cl	ⓘ Sylvite	KCl
K	Potassium
K	ⓘ Sylvite	KCl
Ca	Calcium
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Ca	ⓘ Hydroxylapatite	Ca₅(PO₄)₃(OH)
Ca	ⓘ Diopside (var: Chromian Diopside)	Ca(Mg,Cr)Si₂O₆
Ca	ⓘ Diopside	CaMgSi₂O₆
Cr	Chromium
Cr	ⓘ Diopside (var: Chromian Diopside)	Ca(Mg,Cr)Si₂O₆
Mn	Manganese
Mn	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Fe	Iron
Fe	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Fe	ⓘ Violarite	Fe²⁺Ni₂³⁺S₄
Fe	ⓘ Godlevskite	(Ni,Fe)₉S₈
Fe	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Ni	Nickel
Ni	ⓘ Heazlewoodite	Ni₃S₂
Ni	ⓘ Millerite	NiS
Ni	ⓘ Polydymite	Ni²⁺Ni₂³⁺S₄
Ni	ⓘ Violarite	Fe²⁺Ni₂³⁺S₄
Ni	ⓘ Godlevskite	(Ni,Fe)₉S₈
Ni	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn
Zn	Zinc
Zn	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄ D = Mg, Fe, Ni, Mn, Al, Zn

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Scribano, V., Sapienza, G.T.., Braga, R., and Morten, L. (2006) Gabbroic xenoliths in tuff-breccia pipes from the Hyblean Plateau: insights into the nature and composition of the lower crust underneath South-eastern Sicily, Italy. Mineralogy and Petrology, 86, 63-88.

Manuella, F.C. (2011) Vein mineral assemblage in partially serpentinized peridotite xenoliths from Hyblean Plateau (south-eastern Sicily, Italy). Periodico di Mineralogia, 80, 2, 247-266.

Correale, A., Scribano, V., and Paonita, A. (2019) A volcanological paradox in a thin-section: large explosive eruptions of high-Mg magmas explained through a vein of silicate glass in a serpentinized peridotite xenolith (Hyblean area, Sicily). Geosciences, 9(4), 150; https://doi.org/10.3390/geosciences9040150.

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Valle Guffari, Buscemi, Syracuse Province, Sicily, ItalyiRegional Level TypesValle GuffariValley BuscemiMunicipality Syracuse ProvinceProvince SicilyAutonomous Region ItalyCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }